This interactive world map uses D3.js to visualize country-level economic data, coloring each nation with a categorical scale based on its economy type. The map renders geographic boundaries using d3.geoPath with d3.geoNaturalEarth1 projection, and supports zooming through d3.zoom. Data comes from world-atlas TopoJSON and TSV metadata, while a color legend uses d3-scale-chromatic. Additional code demonstrates animated interpolation between London and New York using d3.geoInterpolate, though that feature appears incomplete in the rendered output.